const golang.org/x/sys/unix.BPF_F_TUNINFO_IPV6

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L2898: 	BPF_F_TUNINFO_IPV6                         = 0x1

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)